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It can't be done. There are an infinite number of circles with a specific radius and which go through a specific point. What you need is the centre of the circle.

If you have two points that the circle crosses, then you can narrow it down to two possible circles.

If you have three points that the circle crosses, then you can narrow the list of possible circles down to a single circle.

But without the information above, it's impossible.

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15y ago

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